feat(ui): open the move history at the newest move; scale the landscape rack glyphs

The move table fills top to bottom, oldest first, so it used to open on the
opening moves — the least interesting end of a long game. Pin it to its last
row when it is shown (the portrait drawer and the landscape dock alike), once
per showing rather than on every arriving move, so a player reading back
through the journal is not yanked to the bottom by an opponent's move.

The landscape tray shares the narrow left panel, so its tiles — and with them
the cqw-sized glyphs — come out markedly smaller than the full-width portrait
tray. Scale the letter and Erudit's blank star up a quarter there; the point
value keeps its size (it reads fine small, and growing it would crowd the
letter on a tile that size).

ui/src/game/Game.svelte

@@ -1358,6 +1358,29 @@
     }
   });
 
+  // The move table's scroller (the grid between the sticky header and the pinned bag footer).
+  let hgridEl = $state<HTMLDivElement>();
+  // Whether the table has already been pinned to its newest row for the current showing.
+  // A plain flag (not $state): the effect below writes it, and tracking it would re-run the
+  // effect from its own write.
+  let historyPinned = false;
+  // The history opens showing the LATEST moves: the grid fills top to bottom (oldest first), so
+  // an untouched scroller would open on the opening moves — the least interesting end. It is
+  // pinned once per showing, not on every arriving move, so a player who has scrolled back
+  // through a long game is not yanked to the bottom by an opponent's move. In landscape the
+  // table is docked open from the start, so the moves usually arrive after it mounts — hence
+  // the wait for a non-empty journal rather than a plain "on open".
+  $effect(() => {
+    const el = hgridEl;
+    if (!historyShown || !el) {
+      historyPinned = false;
+      return;
+    }
+    if (historyPinned || moves.length === 0) return;
+    historyPinned = true;
+    el.scrollTop = el.scrollHeight;
+  });
+
   // Friend state for the in-game "add friend" affordance (the 🤝 in each opponent's score
   // card while the history is open), derived from the server so it is correct across reloads
   // and live-updates when a request is answered: `friends` are the caller's accepted friends;
@@ -1657,7 +1680,7 @@
         </button>
       {/if}
     </div>
-    <div class="hgridwrap">
+    <div class="hgridwrap" bind:this={hgridEl}>
       <div class="hgrid" style="grid-template-columns: repeat({view.game.seats.length}, 1fr)">
         {#each historyGrid(moves, view.game.seats.length, thinkingSeat) as row}
           {#each row as cell (cell.player)}

ui/src/game/Rack.svelte

@@ -159,4 +159,19 @@
     font-size: 7.6vmin; /* cqw fallback for Chrome < 105 */
     font-size: 7.6cqw;
   }
+  /* Landscape docks the rack in the narrow left panel (Game.svelte's .leftpane), so its tiles —
+     and with them the cqw-sized glyphs — come out markedly smaller than the full-width portrait
+     tray. Scale the tile face up by a quarter there so the letters stay comfortably legible; the
+     point value keeps its size (it reads fine small, and growing it would crowd the letter on a
+     tile this size). The media query matches the one that selects the landscape layout. */
+  @media (orientation: landscape) {
+    .letter {
+      font-size: 7.5vmin; /* cqw fallback for Chrome < 105 */
+      font-size: 7.5cqw;
+    }
+    .star {
+      font-size: 9.5vmin; /* cqw fallback for Chrome < 105 */
+      font-size: 9.5cqw;
+    }
+  }
 </style>